AlexTheAnalyst/Excel-Tutorial ? reverse-engineered prompt

I want you to build an Excel tutorial workbook set that helps someone learn the most useful Excel skills by opening and following along in the files.

Please make the examples clear and practical, with simple sample data, good formatting, and step by step demonstrations for things like data cleaning, formulas, XLOOKUP, conditional formatting, charts, common functions, less common functions, and LAMBDA functions. I also want one project style workbook with a realistic dataset that ties a few of these ideas together.

Make it feel like a teaching resource, not just random spreadsheets. Include enough example data and formulas so the user can see how each feature works right away. If anything needs current Excel behavior or newer functions, look up the latest docs online so the examples are accurate.

Keep the files easy to open and understand, with clear labels and useful formatting, so a beginner can learn by clicking around and copying the patterns.